X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Details HANGING DROP VAPOR DIFFUSION. 15 MG/ML PROTEIN IN 50 MM TRIS-HCL, 1.3 MM CAP ANALOG (GPPPG) 0.4 M NACL, 2 MM EDTA, 4 MM DTT, PH 7.5 WERE MIXED WITH AN EQUAL VOLUME OF AND EQUILIBRATED AGAINST 50 MM POTASSIUM PHOSPHATE, 5-10% PEG 8000, 2MM ZNCL2 PH 6.5., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 78.48 α = 90
b = 164.01 β = 90
c = 103.5 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAR scanner 300 mm plate -- 1997-06
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX7.2 -- SRS PX7.2

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
3.1 20 96.8 0.035 -- -- 2.9 -- 12014 -- 0.0 107.0

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MOLECULAR REPLACEMENT. THE ROTATION FUNCTION WAS SOLVED FOR EACH OF THE TWO DOMAINS SEPARATELY. TRANSLATION WAS PERFORMED WITH THE TWO DOMAINS INDEPENDENTLY BUT SIMULTANEOUSLY. 3.1 10.0 -- 0.0 -- 11642 -- 96.7 -- 0.233 0.233 0.314 --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 72.0
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 2.575
x_angle_deg 3.169
x_dihedral_angle_d 24.98
x_bond_d 0.015
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2561
Nucleic Acid Atoms 0
Heterogen Atoms 52
Solvent Atoms 0

Software

Software
Software Name Purpose
AMoRE phasing
X-PLOR refinement
DENZO data reduction
SCALEPACK data scaling